美標電站閘閥
■制造驗收技術標準
1、制造驗收技術條件按日本火力發電用閥標準的E101的規定。
2、閥門結構長度按E101的規定。
3、閥體焊接坡口按ANSl B16 25的規定或按用戶提供的尺寸。
Mahufacture and Acceptanle stanelard
1、The manufaceture and acceptance specification shall be based on the japanese stand ard E101 applied for th thermal power plant
2、The 1ength shall be in line with E101
3、Valve body weldi ng grouve shall be in all ordance wieh ANSlBl6．25 orwieh aser’s specificate
■適用規范 APPlicable specification
| 殼體材料 Shellmaterial | 適用溫度/℃ Applicable temperature | 適用介質 Applicable medium |
| ASTM A216 WCB | ≤425 | 蒸汽、水 Steam，Water |
| ASTM A217 WC1 | ≤450 | |
| ASTM A217 WC6 | ≤550 | |
| ASTM A217 WC9 | ≤590 |
| ■主要零件材料 |
| 殼體材料 Shell material | 材料牌號Mater…Designation | |||
| 閥體 Body | WOB | WC1 | WC6 | WC9 |
| 閘板 Disc | WCB | WC1 | WC6 | WC9 |
| 閥蓋 Bonnet | 25 | 15CrMoVA | 12CrMoVA | 12CrMoVA |
| WCB | WCl | WC6 | WC9 | |
| 閥桿 Stem | 38CrMoVA 1Cr17Ni2 | 38CrMoVA 10r17Ni2 | 38CrMoVA | 38CrMoVA |
| 20CrlMolV1A | 20Cr1MoVA | |||
| 填料 Packing | 增強柔性石墨 Flexible Graphite | |||
| 支架 Yoke | WCB | WCB | WCB | WCB |
| WC1 | WC6 | WC9 | ||
| 密封環 Sealing ring | S軟鋼（增強柔性石墨） S Soft steel（flexible graphite） | S軟鋼 S Soft steel | F軟鋼 F Soft steel | |
| 閥桿螺母 Stem nut | ZQA19-4或A439 D2 | |||
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